Statistics problems and hypothesis testing

Assignment Help Basic Statistics
Reference no: EM13110548

This is a question concerning the use of hypothesis testing:

A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control. The results that came back were 125 in favor of the law, and 120 against. Given that the crew at the center would use the fact that the simple majority would win, Johnny Statman, said I don't think that is appropriate decision, and we really need to need to have our group oppose the law. How do you suppose he came up with that conclusion? What kind of analysis did he do to arrive at his decision?

and

Suppose you devised a training program to raise student scores on a standardized test, such as ACT, or AIMS (like in Arizona). You first administer the test to a random sample of students, record their scores, administer the training to these students, and then administer the test a second time to each of the same students. For each student you record their score for the second test. (I am deliberately leaving out additional parameters, as you will see why in item b)

a. What would the null and alternate hypothesis be?

b. Assuming there was an increase in scores, do you think that only the training method was responsible? What other factors could explain the changes?

Reference no: EM13110548

Questions Cloud

Who is the father : a woman with type A blood has a child with type O blood. three men claim to be the father. Man 1 has B blood type, Man 2 has type O blood, and Man 3 has AB type blood. who is the father?
Estimate sales if minutes of advertising were purchased : Illustrate what are the y-intercept the slope and the correlation coefficient from the above data. Estimate sales if 7minutes of advertising were purchased.
Assuming that the chromosome is one dna double helix : E. coli chromosomes in which every nitrogen atom is labeled (that is, every nitrogen atom is the heavy isotope 15N instead of the normal isotope 14N) are allowed to replicate in an environment in which all the nitrogen is 14N. Using a solid line t..
Illustrate what gain or loss is recognized by corporation : Illustrate what gain or loss is recognized by the corporation when it issues its shares to Kyle? Illustrate what is the basis to the corporation of the property it received from Kyle?
Statistics problems and hypothesis testing : A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control.
What is the order of genes on the chromosome : A cross in corn is carried out with three linked genes in a triply heterozygous genotype for the alleles pairs (A, a), (D, d), and (R, r). The dominant allele A results in red leaves; aa plants have green leaves.
Illustrate what is relationship between deductive arguments : Illustrate what is the relationship between deductive and inductive arguments? Explain why are both types valuable in research? Provide examples of each type, illustrating benefits of their usage.
Evidence that treatment decreases surface hardness : Suppose that population variances from both conditions are equal is there evidence that treatment decreases  surface hardness of steel plates?
What types of mutations have changed the pav : Assuming the PAV allele is the original one, what types of mutations (silent, missense, nonsense, etc.) have changed the PAV allele into the AVI allele? Explain. Based on the information given, how do these changes fit with what you have learned a..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Compute the indicated confidence interval for the difference

Compute the indicated confidence interval for the differenciate in proportions. Suppose that the samples are independent and that they have been randomly selected.

  Confidence level used for the given confidence interval

Determine the confidence level used for the given confidence interval.

  Estimated bootstrap standard error of the median

What is the approximate estimated bootstrap standard error of the median, What is the approximate bias of the median estimated from bootstrapping - What is the bootstrap t confidence interval for the median

  Expand a box plot for each method

Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.

  Hypothesis test-one sample mean

Test the claim that for the adult population of one town, the mean annual salary is given by μ = $30,000.

  Women in workforce

If you were to draw a scatter plot of the number of women in the workforce versus the number of Christmas trees sold in the United States for each year between 1930 and the present

  Finding probabilities with binomial distribution

A regional manager visits local fast-food franchises and evaluates the speed of the service. If the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon.

  Randomly selected seawater samples

In 36 randomly selected seawater samples, the mean sodium chloride concentration was 23 cubic centimeters per cubic meter and the standard deviation was 6.7 cubic centimeters per cubic meter (cc/cm).

  Statistics problem on random sample

In a random sample of 800 customers selected for a short phone interview, 96 have stated that they have received their shipments late. The company's claim is that the percentage of late shipments is at or below 10%.

  Mean weight of the sample horses

Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..

  Recording the count of spots on the up face

Roll a die and record the count of spots on the up face: P(1) = 0, P(2) = 1/6, P(3) = 1/3, P(4) = 1/3, P(5) = 1/6, P(6) = 0.

  Determining the z score of samples

For population with mean of µ=60 and a standard deviation of s=24. Determine the z score corresponding to each of following samples.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd